The sulphidation and oxidation behaviour of sputter-deposited amorphous AlMo alloys at high temperatures

Habazaki, H.; Dąbek, Jarosław; Hashimoto, Kôji; Mrowec, S.; Danielewski, Marek

doi:10.1016/0010-938x(93)90001-w

Cited by 39 publications

(7 citation statements)

References 19 publications

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“…Chen [22] sufidized Al39Mo alloys at 1073 K in a pure sulfur atmosphere, with a sulfur pressure of 10 3 Pa, and also detected Al 2 O 3 . Therefore, the oxidant impurities contained in the sulfidating atmospheres were responsible for the formation of alumina.…”

Section: Discussionmentioning

confidence: 93%

Sulfidation behavior of Fe–40Al sheet in H2–H2S mixtures at high temperatures

Lang

Gedevanishvili

et al. 2004

Intermetallics

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Section: Discussionmentioning

confidence: 93%

Sulfidation behavior of Fe–40Al sheet in H2–H2S mixtures at high temperatures

Lang

Gedevanishvili

et al. 2004

Intermetallics

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“…The increase in corrosion resistance was attributed to the formation of double oxyhydroxides by both elements in the film and the corrosion current decreased with increasing Cr content in the film. High temperature stability of sputter deposited amorphous AI-Mo alloys in oxidizing and sulfur bearing ambients has also been reported [38].…”

Section: Corrosionmentioning

confidence: 96%

The Science, Technology and Materials Applications of Physical Vapor Deposition Processes

O’Keefe¹,

Rigsbee

1995

Materials and Processes for Surface and Interface Engineering

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“…Sulfidation of sputter-deposited aluminum-refractory metal alloys such as Al-Mo [48][49][50][51], Al-Nb [52][53][54][55][56], and Al-Ta [57] alloys follows a parabolic rate law, indicating that the rate-determining step of the overall reaction is the diffusional transport of matter through the sulfide scale formed. Figure 42.5 shows sulfidation (solid lines) and oxidation (dotted lines) rate constants for amorphous Al-Mo and Al-Mo-Si alloys as well as several high-temperature alloys [48,49,51].…”

Section: E Alloys Resistant To Sulfidizing/ Oxidizing Environments Amentioning

confidence: 99%

“…Figure 42.5 shows sulfidation (solid lines) and oxidation (dotted lines) rate constants for amorphous Al-Mo and Al-Mo-Si alloys as well as several high-temperature alloys [48,49,51]. The sulfidation rate of conventional oxidation-resistant crystalline alloys is generally many orders of magnitude higher than the oxidation rate.…”

Section: E Alloys Resistant To Sulfidizing/ Oxidizing Environments Amentioning

confidence: 99%

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Metastable Alloys

Hashimoto

2011

Uhlig's Corrosion Handbook

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A. Structural characteristics B. Corrosion-resistant alloys in aqueous solutions C. Factors determining the high corrosion resistance of amorphous alloys C1. Passive films rich in cations of alloying elements with high passivating ability C2. Homogeneous nature of amorphous alloys C3. High activity of amorphous alloys D. Alloys resistant to aqueous corrosion D1. Aluminum corrosion-resistant metal alloys D2. Chromium-refractory metal alloys D3. Molybdenum corrosion-resistant metal alloys D4. Tungsten corrosion-resistant metal alloys E. Alloys resistant to sulfidizing/oxidizing environments at high temperatures F. Summary References A. STRUCTURAL CHARACTERISTICSAmorphous alloys consist of at least two components and have no long-range atomic order. They are produced by a variety of methods based on rapid solidification of the alloy constituents from the gas, liquid, and aqueous phases. Mechanical alloying, that is, solid-state mixing, is also effective for preparation of amorphous alloy powders. Vitrification of metal surfaces is also made by destruction of the long-range atomic order in the surfaces of solid metals.The formation of the structure with no long-range atomic order is based on the prevention of solid-state diffusion during solidification, and hence the alloys are free of compositional fluctuations formed by solid-state diffusion, such as second phases, precipitates, and segregates. The amorphous alloys are therefore regarded as ideal, chemically homogeneous alloys composed of thermodynamically metastable single-phase solid solutions supersaturated with alloy constituents. This characteristic is particularly suitable in producing new alloys possessing specific properties. Even if amorphous single-phase alloys are not formed, alloys prepared by amorphization methods are often composed of nanocrystalline phases supersaturated with alloying elements. From a corrosion point of view they can be considered as homogeneous alloys. B. CORROSION-RESISTANT ALLOYS IN AQUEOUS SOLUTIONSThe corrosion behavior of amorphous alloys has received particular attention since the extraordinarily high corrosion resistance of amorphous Fe-Cr-metalloid alloys was reported in 1974 [1]. The preparation of amorphous iron-based alloys by rapid quenching from the liquid state using melt spinning generally requires the alloys to contain large amounts of metalloids, which are mostly close to the eutectic compositions.The addition of chromium to amorphous Fe-metalloid alloys is particularly effective in enhancing corrosion resistance. For instance, amorphous Fe-8Cr-13P-7C alloy passivates spontaneously even in 2 M HCI at ambient temperature [2]. (The number denoting the concentration of an alloy element in amorphous alloy formulas is expressed as an atomic percent unless otherwise stated.)Uhlig's Corrosion Handbook, Third Edition, Edited by R. Winston Revie

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The sulphidation and oxidation behaviour of sputter-deposited amorphous AlMo alloys at high temperatures

Cited by 39 publications

References 19 publications

Sulfidation behavior of Fe–40Al sheet in H2–H2S mixtures at high temperatures

Sulfidation behavior of Fe–40Al sheet in H2–H2S mixtures at high temperatures

The Science, Technology and Materials Applications of Physical Vapor Deposition Processes

Metastable Alloys

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